Description

Privilege escalation vulnerabilities exist in the API of HPE Networking Fabric Composer. Successful exploitation could allow an authenticated low privilege operator user to change the state of certain settings of a vulnerable system.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.1",
  "pubDate": "2026-09-01T20:17:19.947Z",
  "pubdate": "2026-09-01T20:17:19.947Z",
  "executiveSummary": "A critical privilege escalation vulnerability has been identified in the API of HPE Networking Fabric Composer, a networking orchestration platform. The flaw resides within the system's authorization enforcement mechanism, allowing an authenticated operator with low-level privileges to bypass standard access controls.\nBy manipulating specific API requests, an attacker can modify sensitive system configurations that should be restricted to administrative roles. This vulnerability poses a significant risk to the integrity and availability of the networking infrastructure managed by the affected system.\nThe attack vector requires initial authentication as a low-privileged operator, meaning the vulnerability is most impactful in environments where internal users or compromised accounts exist. Successful exploitation grants the attacker unauthorized control over device states or system settings, potentially leading to unauthorized network reconfigurations or service disruptions. No specific user interaction is required for the exploit, provided the attacker has valid, lower-level credentials.",
  "technicalDetails": "The vulnerability is rooted in an improper authorization check within the HPE Networking Fabric Composer API. While the system implements role-based access control (RBAC), the API endpoints responsible for modifying core configuration settings fail to adequately validate the privileges associated with the authenticated session token.\nThe root cause manifests when the API backend trusts input parameters or session roles without performing a secondary server-side verification against the specific requested action. This is a classic case of Broken Access Control, where the security boundary between 'operator' and 'administrator' is not enforced for specific administrative function calls.\nThe attack flow proceeds as follows: First, the attacker authenticates to the Fabric Composer API using valid low-privilege credentials. Once an active session is established, the attacker identifies specific API endpoints that facilitate configuration changes. By crafting HTTP requests that target these endpoints and intentionally escalating the scope of the request parameters, the attacker bypasses the client-side restricted UI elements. Because the server fails to cross-reference the user's role against the target configuration settings, the API processes the request as if it originated from an authorized administrative user.\nThe vulnerable component is the API middleware layer tasked with request routing and authorization enforcement. Exploitation does not require elevated privileges initially, only valid credentials within the target environment. The network exposure is limited to the management interface of the Fabric Composer, but the potential for lateral movement or infrastructure-wide impact is high once configuration parameters are manipulated.\nThe post-exploitation impact includes the ability to alter fabric state, update device connectivity settings, or disable security-relevant features. By modifying these state-dependent settings, an attacker can effectively manipulate the network topology, intercept traffic, or create backdoors within the managed networking devices, essentially hijacking control of the orchestrated environment."
}